In November 1958 SONY produced the TR-610 as a "Vertical shirtpocket transistor radio". The TR-610 is the most representative of all early transistor radios. «TR-610 is the one by which all others are judged.» Metal golden grille; sales 436,952 items! Three way wire handle. This information for Sony TR-610 has been taken from Enrico Tedeschi's website.

The semiconductors as listed are according to the schematic with ID=602917.
The schematic with ID=519523 shows the following set: 2T73 2T75 2T76 2T64 2T65 2T65 1T23.